Properties of Aluminium Gallium Arsenide by S. Adachi

By S. Adachi

AlGaAs is the main largely studied and utilized of the ternary semiconductors. foreign arrays of 30 specialists have contributed below the editorship of a global authority on AlGaAs, Dr. S. Adachi of Gunma collage, Japan. matters lined: structural, mechanical, elastic, lattice vibrational and thermal homes; band constitution; optical homes; electro-optical houses; provider delivery; surfaces, interfaces and contacts; impurity and illness facilities; lattice dislocations, second provider delivery, genuine house move band offsets and electro-optic results in AlGaAs/GaAs heterostructures.

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Section D addresses various elastic moduli, such as the Young's modulus, Poisson's ratio, bulk modulus, shear modulus, isotropy factor, compressibility, Cauchy ratio and Born ratio, of AlxGa1^As alloy. Finally in Section E the conclusions obtained in this Datareview are briefly summarised. B. ELASTIC CONSTANTS OF Al x Ga 1 . x As The elastic constants are discussed in [I]. We list in TABLE 1 the generally accepted values of C1J (stiffness) and S1 j (compliance) for GaAs, AlxGa1^As and AlAs which are used in the calculations of this Datareview.

X As system take place along the A direction or L points in the BZ. These gaps are of the two-dimensional M 0 type and give pronounced structure in the optical spectrum [1,2,6-8]. Presented in TABLES 6 and 7, respectively, are the parameters a, b, c for these transitions, except for ref [2]. Tabulated in TABLE 8 are a, b and c for the spinorbit splitting A 1 . TABLE 6 Values of the direct E1 gap energy for AlxGa1^As. 935x) x (x-1) (4) TABLE 7 Values of the direct E1 + A! gap for AlxGa1 _x As. 391 [8] TABLE 8 Values of the spin-orbit splitting A1 for AlxGa^xAs.

Phys. 64 (1988) p. Afromowitz [ J. Appl. Phys. 44 (1973) p. Rosi [ J. Phys. Chem. Silverman [ J. Appl. Phys. ESteigmeier [ Phys. Rev. (USA) vol. Yao [ Appl. Phys. Lett. 51 (1987) p. Kuwamoto, P. Yu [ J. Appl. Phys. Cornish [ J. Appl. Phys. 30 (1959) p. Adachi [ J. Appl. Phys. Dixon [ J. Appl. Phys. Zaitlin [ IEEE Trans. 38 (1991) p. Pollak February 1992 A. INTRODUCTION The alloy system AlxGa1^As is of interest from both fundamental and applied points of view [I]. This material is a model random alloy system.

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